[Elecraft] K2 audio images strong signals 40 meters

[paulb]

Hi again folks


Update on K2 40 meter audio images around 7175;

Serial number of build is 6534 with most options installed.

Dummy load on Antenna RX 40 meters.

Test signals received on 7170 approx 50uVolt, S9 on the K2.

Tune to approx 7175 an image is heard. It is not inverted or
reversed tune. 

Leave the K2 on 7170 and tune the test signal to 7184.
It can be heard  on 7170. 

Best approx guess is 5 s-points down so probably not
a big deal except when the band is quiet and strong signals
are nearby.

The calibration cable has been removed, 

Filter setting and mode have no effect.
On CW the image signal tunes exactly the same, again
about 5 s-points down.

Noticed this oddity a while ago when listening to a couple of
strong SSB stations during daylight hours at another QTH
with low rf background noise.

Suspect this has been the same since build several years ago,
won't be loosing any sleep over it, more curious if it is 
something related to vco mixing products somewhere?

I have noted the mods on earlier K2 builds, could well be
in the same field.

thanks for the replies


cheers 

Paul b
zl1ajy





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